Machine for recording the revolutions of ventilating-fans



(N'o Mo deL) 8 Sheets-Sheet 1. v E. BARTL & F; NICHTER. MACHINE FOR RECORDING THE REVOLUTIONS OF VENTILATING FANS.

No. 374,820. Patented Dec. 18, 1887.

(No- Mode'i.) 3 She etsShee 2;

. E. BARTL & F. NIOHTER. MAGHINE FOR RECORDING THE RBVOLUTIONS 0F VENTILATING FANS.

Patented Dec. 13, 1887.

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WW4 I W N. PETERS Phololillwgnphur, Wuha'nltun. ILC.

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. E. BARTL 8z I. NIGHTER. MACHINE FOR RECORDING THE REVOLUTIONS OP VENTILATING FANS.

No. 374, 20. 1; Patented Dec. 13, 1887.

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EDMUND BARTL AND FRANK NICHTER, OF SCRANTON, PENNSYLVANIA.

MACHINE FOR RECORDING THE REVOLUTIONS F VENTILATING-FANS.

SPECIFICATION forming part of Letters Patent No. 374,820, dated December 13, 1887.

Serial No. 239,677. (No model.)

To all whom it may concern:

Be it known that we, EDMUND BARTLand FRANK NIoHTER, both residents of Scranton, in thecounty of Laekawanna and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Recording the Revolutions of Revolving Shafts; and

we do hereby declare that the following is a full, clear, and exact description of the invenshaft on line 4 4, and Fig. 5 is a top plan view of the entire machine.

Similar numerals of reference indicate corresponding parts in all the figures.

Our invention has relation to that class-of machines for recording the number of revolutions of revolving shafts in which an arm carrying a marker is suitably connected to a governor receivingits motion from the shaft the revolutions of which it is desired to record, marking a continuous line upon a graduated sheet revolved under the marker by suitable clock-work; and it consists in the improved construction and combination of parts of such a machine which is especially adapted to record the revolutions of the shafts of ventilating-fans used in mines, as hereinafter more fully described and claimed.

In the accompanying drawings, the numeral 1 indicates the bed-plate of the machine, which is formed with an upwardly and forwardly curved arm, 2, having a vertical bearing, 3, in its upper overhanging end. A vertical governor-shaft, 4, is journaled with its upper end in the vertical bearing in the overhanging arm and in a registering bearing, 5, formed in a bracket or arm, 6,-upon the under side of the bed-plate, and the lower portion of this shaft, between the lower bearing and the bed-plate, is provided with a crown-pinion, 7, facing downward and engaged by a cog-wheel, 8, upon a horizontal shaft, 9, receiving its inotionfrom the driveshaft of the fan or engine driving manner from the driving-power.

The crown-pinion and the cog-wheel may be dispensed with, and the governor-shaft may receive its revolving motion in any other suitable manner from the motive power.

A vertical bearing, 10, projects upward from the bed-plate around the perforation, for the passage of the governor-shaft, and a sleeve or tubular shaft, 11, is journaled with its lower end in this bearing, being journaled upon the shaft and revolvingwith it and sliding vertically upon it. The lower end of this tubular shaft or sleeve is provided with two diametri- Cally-opposite blocks, 12, which slide in vertical slots 13 in the sides of the vertical bearing 10, and the upper end of the tube is pro- Vided with a cylindrical head, 14, sliding upon the upper end of the shaft below the upper bearing, and having two diametrically opposi t e Vertical slots, 15, in its sides, with which it slides upon rollers 16, journaled upon laterally and diametrically oppositely-projecting studs 17 upon the shaft.

Two governor-arms, 18, having adjustable weights or balls 19 sliding upon them and secured by set-screws 20, are pivoted, with their upper ends between diametrically oppositelyprojecting perforated cars 21 upon the upper end of the cylindrical head, and the upper and outer ends of arms 22 are pivoted to the middles of these arms, while the lower or inner ends of the arms are pivoted to cars 23, projecting diametrically opposite to each other of the vertical sleeve or bearing upon the bedframe, being confined from above by asleeve, 25, secured upon the said bearing. Coiled springs 26 are secured with their ends to the balls or weights of the governor-arms, serving to draw the arms down.

An oil-cup, 27, has its screwthreaded neck 28 secured in a female screw-threaded perforation, 29, in the upper end of the upper bearing, and the oil passing down through the neck of this cup will flow down the shaft and will lubricate it and all its moving parts, the oil being stopped in its downward flow and the fan, or receiving its motion in any suitable from a ring, 24, journaled upon the upper end ICO conveyed to the adjoining parts by the ends of the bearings of the moving parts upon the sh aft.

A transverse rock-shaft, 30, is j ournaled horizontally in transverse bearings 31 upon the bed-plate, and two arms, 32, project forward from this shaft and are pivoted in the bifurcated ends of two short arms, 33, pivoted upon bolts or studs 34 at the ends of the blocks of the sliding sleeve projecting through and sliding in the vertical slots 13 in the bearing upon the bed-plate. Thetransverse rock-shaft has besides these two arms a lever-arm, 35, projecting rearward and provided with an adjustable poise, 36, and also an arm, 37, projecting horizontally from the rock-shaft at the end of the same.

The bed-frame is provided at one side with a flat upright, 38, formed with a vertical T- shaped groove, 39, in its outer face, and abar, 40, slides within this groove, having bearingblocks 41 fitting and sliding in the groove, while the bar projects outside of the groove at the face of the upright. The upper end of this bar is provided with a laterally-projecting short arm, 42, to the end of which the upper .end of a connecting arm or rod, 43, is pivoted, the lower end of this arm or rod being pivoted to the end of the arm 37, projecting from. the end of the rock-shaft 30.

A clock-work,80, of any suitable construction, has a disk, 44, secured to a central sleeve,

45, having a set-screw, 46, upon the minutearbor 47, the said arbor revolving once in twenty-four hours in the direction opposite to the usual direction of the minutehand of a clock, revolving from right to left, and the back of this disk bears against the ends of a number of pins, 48, projecting from the upright 38, serving to steady the disk and keep it in a vertical plane. The said set-screw 46 will permit the sleeve and the disk 44 to be removed when desired. The periphery of this disk is formed with an outwardly-bent flange, 49, having a number of spring-latches, 50, projecting through said flange,with their ends in over the face of the disk, and these springlatches will serve to confine a circular dialplate, 51, having a pin, 52, projecting from its rear face and fitting into a perforation, 53, in the flanged disk, as shown in Fig. 4. The outer face of this dial-plate is provided with a central pin, 54, and with an eccentric pin, 55, by means of which the recording-dials 56, which are preferably of paper or thin cardboard, In'ay be secured to the dial-plate, the said dial-sheets being suitably ruled and divided, as will be described more fully.

The vertically-sliding bar 40 upon the upright 38 is provided with an outwardly-projecting arm, 57, at its upper end, and with an outward] y-proj ecting stud, 58,upon which stud the perforated lips 59 of a lever, 60, are pivoted by means of a transverse bolt, 61, passing through the lips and the stud. This lever has a bifurcated upper end, 62, with which it slides upon the outer end of the upper arm, 57, of the sliding rod, and a spring, 63, secured to the inner side of the upper arm of the lever,

bears with its lower end against the sliding has a sleeve, 65, secured adjustably upon it by means ofa set-screw, 66, and an arm, 67, proj ects downward from this sleeve,and has a split lower end formed with outwardly-bulging portions 68, between which a tube, 69, holding a marking-ink, may be clamped, a screw, 7 O, passing through the split and bulged portions at the lower ends, serving to clamp the inktube, which is formed with an inwardly-bent end, through which the ink may flow onto the face of the dial, the spring upon the upper end of the lever forcing the marking-tube against the dial. A hook, 71, is pivoted to the upper end of the rod or arm 43, connecting the sliding bar and the arm at the end of the rockshaft, the said hook serving to engage the up per end of the lever 60 and to hold it in to ward the sliding bar, keeping the markingtube out of contact with the dial.

The dial-sheet is divided by radiating lines into twenty-four divisions, corresponding to the hours of the day and night, the point of the marking-tube registering as the clock goes with the corresponding lines indicating the hours and the intermediate radiating lines indicating the subdivisions of time, the dial in the drawings being divided by lines indicating the spaces of ten minutes; and a number of circular lines are formed upon the dial intersecting the radiating lines, which lines are marked with figures indicating the numbers of revolutions of the driving-shaft.

When, now, the machine is to be used for re cording and registering the revolutions of a shaft, the dial-sheet is secured upon the dialplate, the central pin of the plate passing through the center of the sheet and the eccentric-pin passing through the sheet at a point which will bring the radiating line indicating the exact time of the day at which the sheet is secured to the plate to register with the point of the marking-tube, when the plate with the sheet is placed upon the dial-disk and secured upon it by the flange, pin, and spring-latches.

It is often preferable to secure six or seven dial-sheets upon the dial-plate, one above the other, so that a sheet may be removed each day, and the dials thus be in place for an entire week.

The arm carrying the marking-tube is ad justed upon the lower end of the rocking lever, so as to bring the point of the tube to register with the innermost of the concentric circular lines, and when the shaft is revolved and the number of its revolutions at a given time are known the poise upon the lever is adjusted so as to allow the point of the markingtube to register with the corresponding circular line indicating the number of revolutions made at that time, and the other circular lines being made at proportionate distances from the center of the disk, the number of revoluugal force will throw the governor-balls out in the usual manner, depressing the tube upon the shaft and the ends of the arms pivoted to the slidingblocks at the lower end of the same, thus tilting the rock-shaft and raising the ends of the lever and arm projecting from the rockshaft. The poise upon the lever having been adjusted so as to allow the other arm of the rock-shaft to guide the marking-point to the circular lines indicating the number of revolutions made by the drive-shaft, it-will thus be seen that as the speed of the shaft increases the poise upon the lever will be raised and the other arm of the rock-shaft will raise the sliding bar carrying the marking device, an increase in the speed thus bringing the point of the marking-tube to register with the circular lines nearer to the periphery of the dial,while a decrease in the speed will again bring the point nearer to the center of the same, causing the marking'point to leave an irregular line upon the dial with the marking-fluid, the said line intersecting the time-lines and the lines indicating the revolutions, so that a person may by looking at the dial at a glance see how many revolutions the drive-shaft was making at a certain time by finding the place upon the radiating time-lines and circular revolution-lines at which the marking-line intersects.

Having thus described our invention, we claim and desire to secure by Letters Patent of the United States-- 1. In a machine for recording the revolutions of revolving shafts, the combination of a vertically-journaled shaft having two diametrically-opposite studs near its upper end provided with rollers, a vertical bearing for the lower portion of the shaft having diametrically-opposite vertical slots in its sides, a tube upon the shaft having laterally-projecting blocks at its lower end sliding in the slots of the bearing, and having a cylindrical head at its upper end having vertical slots for the rollers of the shaft, weighted arms pivoted at their upper ends to the upper end of the head, having adjustable weights or balls and coiled springs between them, and arms pivoted to the weighted arms and having their inner ends pivoted to a ring journaled upon the vertical slotted bearing, as and for the purpose shown and set forth.

2. In a machine for recording the revolutions of revolving shafts, the combination of a centrifugal governor provided with vertically-sliding blocks at its lower end sliding upward by increase in speed, and vice versa, a rock-shaft having projecting arms plvoted to short links or'arms pivoted upon the blocks, and provided with a lever having an ad ustably-sliding poise and an arm projecting in the same direction, a vertically-sliding bar pivotally connected to the said arm and having a markingpoint yieldingly secured to 1t, and a dial revolved by suitable mechan sm and having the marking-point bearing against it, as and for the purpose shown and set forth.

3. In a machine for recording the revolutions of revolving shafts, the combination of a centrifugal governor provided with vertically-sliding blocks at its lower end sliding upward by increasing speed, and vice versa. agrock-shaft having arms projecting toward the governor and pivoted at their ends by means of pivoted links or arms to the slidlng blocks, a lever projecting in the opposite d1 rection from the rock-shaft and having an adj ustable poise, an arm projecting in the same direction as the lever from the shaft at the end of the same, an upright having a vertical T- shaped groove in its face, a bar sliding with correspondingly-shaped lugs in the groove and having a laterally-projecting arm and an outwardly-projecting arm at its upper end, a connecting'rod pivoted to the laterally-projecting arm and to the arm projecting from the rock-shaft, a lever pivoted with perforated ears upon a stud projecting from the sliding bar, and having a spring forcing its upper arm outward and having its upper bifurcated end rocking upon the outwardlyprojecting arm of the sliding bar, an arm secured adjustably upon the lower end of the lever and having a marking-tube at its lower end provided-with a point and filled with a marking-fluid, and a dial revolved in a given space of time by a suitable clock mechanism, as and for the purpose shown and set forth.

4. In a machine for recording the revolutions of revolving shafts, the combination of a dial-disk upon the arbor of a clock-work, said disk having an outwardly-bent flange at its periphery provided with inwardly-projecting spring-latches, a dial-plate having an inwardly-projecting pin registering with a perforation in the disk, and having a central outwardly-projecting pin and an eccentricpin upon its face, and dial-sheets secured upon. the plate by the latter two pins, as and for the purpose shown and set forth.

In testimony that we claim the foregoing as our own we have hereunto affixed our signatures in presence of two witnesses.

EDMUND BARTL. FRANK NIOHTEB. Witnesses:

EDWARD KELL, SAMUEL WALLAoE. 

